PS: with charity, sacred songs or hymns (6)
I believe the answer is:
psalms
'sacred songs or hymns' is the definition.
(I've seen this before)
'ps with charity' is the wordplay.
'with' says to put letters next to each other.
'charity' becomes 'alms' (alms is a kind of charity).
'ps'+'alms'='PSALMS'
(Other definitions for psalms that I've seen before include "in the Bible?" , "Old Testament book of sacred songs" , "They're heard in church" , "Biblical songs" , "Sacred songs or poems" .)